I agree with getting some experience...it's a good thing. But I still think some want to make it sound a bit more difficult than it has to be. I had a small (29 gallon) marihevtank for several years, before I had to move and could not longer keep it.
I had an anemone, a clown fish, a blue tang, and a snake fish. Not too large a population, but they were so entertaining and beautiful.
Especially with marine, don't overpopulate your tank. Have quality basic equipment and keep up with minimum water changes...which aren't that big of a deal...and you'll be fine.
Remember, with marine tanks, surface area is more important than volume. That's why most marine tanks are longer and not so tall.
